I plan buying a Canon 35mm prime. I always read good things about the old 35mm f/2, the AF noise would not bother me that much, but now I see here that it is so much worse in the corners than the newer, more expensive IS version of the lens. I need this lens for inside pictures of people in available light with my Rebel... so I would use it a lot wide open, at a shutter speed not longer than 1/125, so the IS would not be crucial. And, wide open, the corners would usually be blurred anyway, so from your experience, how much of a problem would the corners be shooting the old 35mm wide open ?